What breed are these Roosters!?!

I got these Roosters from TSC from the pullets bin but of course all three turned out to be roosters. There starting to show signs of aggressiveness towards each other and we need to get rid of two of them. One of them were keeping but the other two were getting rid of. Anyways, I was wondering what breed they are so that we can get rid of them.

About 6-7 weeks. I heard one of them crow but I'm not sure which one it was and they act like roosters. They try to fight sometimes(but don't injure each other.Thats one reason we need to get rid of them soon) and all three are mean except for the one were keeping hes nicer than the others and acts more protective.

Well, they aren't roosters yet, they are still cockerels until they are a year old, and these are both Delawares. Dels are a lovely breed and the boys are usually pretty well behaved.
Good luck if you can keep them. If you wish, they will be plenty big enough for dinner birds.